Trickflow Genx Ls3 280cc Intake, 6-Bolt Aluminum Cylinder Head - Standard Valves

Trickflow is building on the features that make the GenX 255 for GM LS3 great—like 12 valve angles and relocated valves for reduced valve shrouding and improved piston-to-valve clearance—Trick Flow's GenX 280 HD cylinder head withstands the abuse of high horsepower, power-adder performance demanded by today's racers and engine builders. The GenX 280cc heads list of features is long, HD castings with industry leading airflow through CNC Competition Ported 280cc intake ports and Trick-Alloy powdered metal valve guides for added longevity. Manley Severe Duty intake and exhaust valves, Trick Flow by PAC Racing dual valve springs, titanium retainers, .750-inch thick deck, and 6-bolt-per-cylinder mounting pattern round out the features. This Trick Flow GenX 280 cylinder head work with all LS3 intake manifolds and LS9/LSA blower assemblies and fit all LS head gasket and engine block combinations. Sold individually.
Cylinder Head Specs: Part Number: TFS-3261T004-CH2 Combustion Chamber Volume (cc): 67 Intake Runner Volume (cc): 280cc Exhaust Runner Volume (cc): 87cc Cylinder Head Material: Cast aluminum Camshaft Style: Hydraulic roller Intake Port Shape: Rectangular Intake Valve Diameter (in.): 2.165 in. CNC-Machined Combustion Chamber: Yes CNC-Machined Intake Runner: Yes CNC-Machined Exhaust Runner: Yes Combustion Chamber Style: Heart Intake Port Location: Standard Exhaust Port Shape: Oval Exhaust Port Location: Standard Spark Plug Style: Angle Intake Valves Included: Yes Exhaust Valves Included: Yes Exhaust Valve Diameter (in.): 1.600 in. Valve Springs Included: Yes Maximum Valve Lift (in.): 0.650 in. Outside Diameter of Outer Spring (in.): 1.300 in. Damper Spring Included: No Number of Springs Per Valve: Dual Retainers Included: Yes Retainer Material: Titanium Locks Included: Yes Lock Style: 7 degree Valve Stem Seals Included: Yes Rocker Arm Studs Included: No Rocker Arms Included: No Rocker Arm Nuts Included: No Guideplates Included: No Accessory Bolt Holes Drilled: Yes Intake Valve Angle: 12 Exhaust Valve Angle: 12 Valve Guides Included: Yes Valve Guide Material: Powdered metal Valve Seats Machined: Yes Valve Seat Machine Style: 3-angle Valve Seat Material: Ductile iron Cylinder Head Color: Natural Steam Holes Drilled: No Oiling Style: Through pushrod Machined for O-Ring: No Heat Crossover: No Quantity: Sold individually. Notes: These cylinder head can only be used with a minimum bore diameter of 4.000 in. Includes new rocker arm rail mounts for use with LS3 1.7 ratio rocker arms. OEM rocker arm rail mounts will not work with these head. Unlike the TFS-3261T04-HC01 heads, these TFS-3261T004-CH2 heads are not HIP'D castings (Hot Isostatic Pressed) and only have severe duty intake / exhaust valves.   Key features:
280cc intake ports and 67cc combustion chambers
HD casting
Accepts 3/8 in. pushrods
Powdered metal valve guides
2.165 in. NK-844 severe duty stainless steel intake valves
1.600 in. severe duty stainless steel intake valves
.750 in. thick deck
6-bolt configuration
Includes a Trick Flow LS3 rocker stand

tfs-3261t004-ch1_wx.pdf